Cilly Feindt was a first-rate equestrian, who could master any horse by the age of twelve. She first performed in public with the Circus Paul Busch and, subsequently, at the Wintergarten and the Scala Berlin. With her horses Nestor and Astor, she went on successful tours of South America and the United States, highlighting at Radio City Music Hall in New York. From 1925, she appeared in several German films, culminating in the Ufa production
Vacationing from Oneself (1934). After World War II, she performed again as a trick rider with Circus Althoff and with Ringling Brothers in the United States. She eventually established herself in California, having bought a house and stables in a suburb of Los Angeles.